Finding the Third Proportional to 445.50 and 673.31

Step by Step Solution

1. Step 1: Write the proportion equation
   445.50 : 673.31 = 673.31 : x
2. Step 2: Convert to fraction form
   445.50/673.31 = 673.31/x
3. Step 3: Cross multiply
   445.50x = 673.31 × 673.31
4. Step 4: Simplify right side
   445.50x = 453,349.72
5. Step 5: Solve for x
   x = 453,349.72/445.50
6. Step 6: Final answer
   x = 1,017.62